Improvement in water-filter



JOHN C. JEWETT, OF BUFFALO, NEW YORK.

Letters Patent No. 96,923, lated November 16, 1869.

IMPROVEMENT 1N WATER-FILTER.

The Schedule referred to in these Letters Patent and making part of the same.

nectiou with the main filtering-bed, of a subordinate bed, which can be readily removed, and cleansed and refilled, through which the liquid is iirst passed, the grosser particles of' foreign matter being intercepted before reaching the main bed, which can thus be usedA v for years, without change or renova-thm.

rlhe invention consists- First, in, sinking a vessel in the main and permanent filtering-bed, and arranging therein a removable iiltering-cup.

Second, in the arrangement of the cup, forming the subordinate filter, within a larger one, which is sunk in the permanent bed, and provided with pertbrations, oran escape for the water into the main bed, at or near its upper edge, so that a deposit of a portiondof the impurities, which pass through the removable bed, will take place in the bottom otl this outer receptacle.

Third, in the employment and arrangement, around the mouth ot' the relnovable tiltcr, of a tlange, extending above the division-plate, (forming the bottom of the receiving-chamber,) so that the liquid is compelled to pass over the upper edge of this iiange or curb, in entering the first iilter, whereby the sediment, which is deposited in the bottom of the receiver, is prevented from entering the filter.

In the accompanying drawing, which represents a vert-ical section ot' one of my improved iilters A is the upper or filtering-portion, and

A', the reservoir, beneath, for thc filtered water.

lhe permanent iiltering-bed consists of' an upper stratum, (l, of coarse gravel, with strata C1 C" C of charcoal, sand, and line gravel, successively, beneath.

The composition and arrangement of this bed are old, having been used by me for many years.

Y 'D is the receiving-clxamber, into which the water is first poured..

E is thesunkcn cup, soldered or otherwise fastened at its upper edge to the division-plate j, and

e e are the pcrforations near its upper edge, for the 'escape ofthe water into the main bed.

G is a smaller cup, iilled with gravel or other iiltering-material, suspended within the cup E by means ot a flange at its upper edge, overlapping the edges of the holein the division-plate, so as to leave a space around and below it and the cup E, as shown.

m is the flange, surrounding the month of this lesser filter, and v a is a sponge, placed within this curb or collar, and resting on top of the gravel.

The sponge may be held in place by a perforated cap, s, which may be made to screw over the flange ou, as represented 'lhc vessel E maybe made to extend downward, so as to be soldered to therbottom plate of the main, bed, as required.

The operation of my improvementsis as follows:

The water being poured iu the receiver D, a partial deposit rst takes place at its bottom. The sponge and gravel iu the cup G will remove the grosser particles of the foreign matter contained ip the water, which passes through' the perforated bottoni ofthe cup, into the outer cup, at the bottoni of which a further dcposit takes place.

From the top of this vessel the water flows through theA perforations, into the permanent bed, through which it tilters into the reservoir A', beneath.

lhe cup G can be removed from time to time, as it becomes foul, by unscrewing the cap s, which leaves the cup-aud its contents free to be taken out. The deposit in the bottom ot' the vessel E cau now be removed, and the cup G and sponge, after being refilled and cleansed, replaced. y

It is evident, that by means of my improvement, the greater portion ot' the impurities willbe deposited or intercepted, in the bottom of the receiver, in the cup G, or in the bottom of the vessel E, so that the permanent iilteriug-bed can be used along time, before it will require to be changed.

That I claim, as my invention, is-

1. rlhe arrangement of aremovable filtering-cup, G, within a vessel, E, sunk iu the permanent tilteringbed, substantially as set forth.

2. With a removable filtering-cup, G, embedded vessel E, and permanent bed of a filter, arranged as hcreinbefore described, the outlet c, arranged near the top ol the vessel l l,as and for the purpose set forth.

3. Thearrangement, with the division-'plate f and removable lilter, of the curb or iiangc m, in the manner and for the purpose specified.

Witnesses:

JAY HYATT, J No. J. Bouwen.- 

